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Individual
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Individual
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Priority to ES0084449UpriorityCriticalpatent/ES84449Y/en
Publication of ES84449UpublicationCriticalpatent/ES84449U/en
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Publication of ES84449YpublicationCriticalpatent/ES84449Y/en
Improved toothbrush, characterized in that the set of bristles mounted on the head comprises the arrangement in the central part of longitudinal rows of tufts of bristles of hard and rigid nature, surrounded on their edges by other rows of tufts of soft and flexible bristles , so that the rubbing surface, is divided into a hard longitudinal central area, to act on the teeth and two narrow areas on both longitudinal sides, of soft constitution, so that the friction on the gums in the dividing line of these with the teeth, does not produce damage or irritation in the gums. (Machine-translation by Google Translate, not legally binding)